The Pyle PWMA100 wireless PA system is perfect for events where you need to move around with your microphone and retain the same quality sound you expect from a wired amp. It comes with a wireless mic that operates at a distance up to 100 ft. The amp is compact and lightweight for easy portability. It runs on a rechargeable battery, so you don't need to keep buying new batteries - simply plug in with the included AC adaptor and charge. Adjust the sound to your liking with the treble and bass controls. This amp even includes an echo knob for a wicked sounding voice effect. There's also a 1/4" jack input to plug in a wired mic.